Merge pull request swiftlang#35652 from apple/5.4-disable-cmark-for-non_executable-preset

Disable CMark test for buildbot,tools=RA,stdlib=RD,test=non_executabl…

Author: shahmishal

utils/build-presets.ini

@@ -38,6 +38,8 @@ build-swift-stdlib-unittest-extra
 install-llvm
 install-swift
 
+skip-test-cmark
+
 # Path to the root of the installation filesystem.
 install-destdir=%(install_destdir)s